We lost 2 Newfies, my kids laugh because I can spot one a mile away. I will pull my car over and jump out just to pet one.
They are very sweet. However; I would not count on him to protect any of the family members.
That is why we also have a German Shepherd / Chow mix. Nobody gets past that dog.
My oldest Lab Shelley as a puppy was occasionally baby-sat by my obedience trainer, who owned a certified water rescue Newfie named Kansas. Kansas was the 'protector' of all the little puppies. Shelley quickly discovered that she could tease all the older dogs, and then run to Kansas and hide under her belly hair, where nobody would bother her.
I've never met a Newfie that would 'bite a biscuit' as they say. Just big lovable goofs and absolute sweethearts. Any cop who would taze one and then shoot it in the gut a couple times with a rifle is a total idiot. Then he gets a "nice job" from his partner.
These are bad cops, no way around it. I hope they and their department get sued til their eyeballs rattle. And get shunned by the entire township. It's the only way to get their attention.